Configure postfix to use SPF, and setup an SPF record in DNS for that domain.
sent from my Telstra NEXTG™ handset
________________________________
From: Alfonso Alejandro Reyes Jimenez <aare...@scitum.com.mx>
Sent: Tuesday, 5 October 2010 5:38 AM
To: postfix-users@postfix.org <postfix-users@postfix.org>
Subject: ..::Spoofing Issues::..
Hi, everyone.
I have an issue with some users that are spoofing our mail server, rightnow we
can restrict the spoofing on the same server.
But if they use another smtp server pretending that they are on our domain the
can send those emails.
I use to work with websense which can be configured to get only mails from the
users and ip address that belong to the domain, is there some way to tell
postfix that he owns the domain mycompany.com and it reject everything that
pretend to be the same domain?
Or any other idea to prevent the outside spoofing?
Thanks in advance.
Regards.
Saludos.
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Ing. Alfonso Alejandro Reyes Jiménez
Analista del sector Gobierno
E-mail: aare...@scitum.com.mx<mailto:aare...@scitum.com.mx>
Telefono: 91 50 74 00 ext. 7489
Movil: (044) 55 52 98 34 82
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